The Men's Micro D 1/4-Zip by Patagonia is a lightweight, warm and fast-drying 1/4-zip microfleece works as either insulation or outer layer.

It's hard to find time to throw your Micro D in the wash when it's in constant use. Uber soft and lightweight, this pullover has a fast-wicking, 4.7-oz polyester microdenier fabric that's comfortable, supple and exceptionally breathable. Made from 85% recycled fleece, it's the perfect weight to wear alone on a shady crag or layer under a shell when the storm clouds roll overhead. A deep quarter-front zip lets you vent extra heat.

"This fall, I’ve already had three friends send me an email or text with the same question: “Which is the best fleece jacket?” It can be a difficult question to answer, because there are so many fleece jackets available, and because the best fleece jacket for you will vary widely depending on what you want to do with it..."
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The Micro D 1/4-Zip is very versatile and great for any use. I wear it as a base layer when cold and as a nice warm sweater on cooler spring/summer nights. Once this one wears out, which I don't see happening anytime soon, I will be sure to purchase another one. One thing that I would add would be thumb holes, but only as a personal preference.

I love this fleece! I wear it whenever it's cool enough here in Southern California to need long sleeves. It's super soft, perfect over just a T-shirt. I also like that the collar will lay reasonably flat if the zipper is part-way down--I don't like "stand-up" collars.

I'm 5'8" and a soft 210 lbs, and I'm just comfortable in the size L, though it'll be better when I drop another 10 lbs. I've been tempted to order another color.